Just a bit more perspective for you. We are in a small market on the west coast, so haunts are not an established form of entertainment here. Our first year we spent over $5000 on advertizing and on...

it is a pretty cheap DIY but plug and play is something else. What i do plays off an SD card, auto plays a single track and can be triggered to play an efx track and then resume. I have a ac adapter...

So what is cheap when it come to an MP3 player that uses an adapter for AC power? One with an auto play track and a triggerable effect track that then defaults back to the primary track when finished...